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Automotive Door Management Swap Reference Design


Automotive Door Control Switch Reference Design

This reference design offers an environment friendly, light-weight, and cost-effective different to conventional automotive door management swap panels, paving the best way for superior automotive management functions by wi-fi communication.

Automotive door management switches are very important in fashionable autos, enhancing comfort and security. They handle features like locking/unlocking doorways, controlling home windows, and adjusting mirrors, centralizing management to enhance effectivity and cut back driver distraction. Superior switches function built-in security mechanisms similar to youngster locks and emergency egress functionalities, essential in emergencies. In addition they assist sensible applied sciences, enabling keyless entry/exit and enhancing safety. Past private autos, these switches are utilized in business and public transportation, making certain passenger security and luxury. As car expertise evolves, their integration with programs like central locking, anti-theft alarms, and computerized window controls highlights their important function within the automotive business.

This automotive door management swap reference design presents a proof-of-concept answer for a door management swap panel that communicates wirelessly with door-side mirrors, window lifts, and door lock mechanisms. By utilising Texas Devices (TI) automotive-qualified Bluetooth low power + MCU CC2541-Q1 system-on-chip (SoC) answer, this design affords important value, weight, and gasoline financial savings by changing the historically costly and heavy cable harnesses with a wi-fi different.

The design TIDA-00356 by Texas Devices demonstrates the usage of Bluetooth low power for automotive management functions, showcasing the alternative of wires and harnesses with a sturdy and mature Bluetooth ultra-low energy SoC answer that has full Bluetooth low power certification. It consists of dual-power enter, that includes a coin cell battery mode for absolutely unbiased, transportable operation, and helps a large enter voltage vary from 3V to 50V LDO for direct automobile battery operation, with built-in reverse battery safety. The design is able to working successfully in start-stop and cold-start environments and options an AEC-Q100-qualified machine. The automotive-qualified CC2541-Q1 is accessible with a slight pinout change from the CC2541.

The design employs the SAT0016 BLE module, which incorporates crystals and a PCB antenna, drastically simplifying format and design issues. Major format issues for the primary board embody minimizing the space to energy capacitors to make sure secure operation and avoiding any extra steel or floor planes in shut proximity to the module antenna to take care of optimum sign energy and efficiency. All PWM channels are tied collectively to a single GPIO. The LED driver, which isn’t operational off the Li-Ion battery, has present in every channel restricted to 20mA by way of the reference resistor R11. Particular format issues must be noticed to make sure correct thermal dissipation when working the LED driver at this restricted present for prolonged intervals. TPD units require minimal configuration and may defend the CC2541 from Degree 4 Contact Discharge on every of the tactile switches. 

TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) format, and so on. You will discover further knowledge concerning the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.

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